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PROJECT / PUBLIC SPACES
Meinhardt Light Art developed a custom designed light fitting as a sculpture of 460 LED custom pendants flowing through the entrance lobby of the Gateway Plaza.
PROJECT DETAILS
Gateway Plaza, Sydney, Australia Lighting Design: Meinhardt Light Art Lighting: 3S Lighting, Xenian living light, ERCO
The brief from the client, DEXUS Wholesale Property Ltd., was to provide an innovative, exciting and energy efficient lighting design solution for the entrance lobby of the Gate- way Plaza Building. The new lighting in the foyer was required to use energy efficient luminaires to reduce the energy consump- tion of the lighting by 20%. The lighting design was part of a complete upgrade designed by Hassell Architects, Sydney. The key ideas for the lighting to the lobby area came about due to the layout of the Gateway Plaza foyer in creating a custom luminaire ‘The River of Light”, a large number of luminaries floating through the foyer space, embracing the lift lobby. The extended horizontal space of the lobby area is structured by a series of vertical Marblo panels spanning from floor to ceiling. The panels are back-lit by linear LED strips in a very cool colour temperature to provide a strong contrast between strips and the warm colour temperature of the general lighting and the wooden surfaces. Meinhardt Light Art developed a custom designed light fitting as a sculpture of 460 LED custom pendants flowing through the
entrance lobby of the Gateway Plaza. It is a sparkling chandelier in which each pendant is mounted individually to the ceil- ing. All parts work harmoniously together to create one complete light sculpture. Each pendant consists of a transparent acrylic tube designed in three different lengths. The visible light fixings within each tube consist of LED direct/indirect light component. The direct downlight provides an atmospheric functional illumination whereas the indirect up-light creates a halo effect on the ceiling above. Varying mount- ing heights create a fluid spatial distribution of light along the length of the sculpture. Along with providing functional lighting to the foyer, the design intent was to maxi- mise refraction by exploring the shape and reflectance of the acrylic tubes and the chrome surfaces of the individual lumi- naires. The light emitted from each single pendant interacts with the adjacent pen- dants reflecting, refracting and transmitting light. This results in a brilliant light sculp- ture incorporating an ever changing visual experience. Due to the relatively low light output of the individual luminaires of the river of light, visual comfort levels are high as the light is distributed in a multitude of glare free sparkles. The wash lighting to the verti- cal wooden wall panels in the lift lobby provides a high visual comfort because no
direct light source is exposed within the total visual filed of the viewer All types of luminaries are connected to a lighting control system and can be dimmed or switch individually. The custom pendants of ‘The River of Light’ installation can be controlled in groups of ten fittings. The sen- sation of an ever changing visual experience is strengthened by a variety of pre-pro- grammed light scenes. The ‘Starry Sky’ is a random on / off switching to produce an intense sparkle. The ‘River of Light’ groups pendants together and gently dims up and down in one direction. This creates waves of light flowing through the sculpture. The initial design achieved a 15-20% reduc- tion in the energy consumption for lighting in the entire entrance area. Later, design changes including the introduction of more energy efficient light sources and a new lighting control system meant we could achieve a further reduction in energy con- sumption of about 45% when compared with the previously installed lighting in the main entry and lift lobby. All luminaires are connected to a daylight sensor which automatically dims down during daytime hours. All pre-programmed light scenes, include the light sculpture are dynamically switched on-off or dimmed down.
www.meinhardtgroup.com
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